Lately a new "Exchange 2.0" taking over. Bittrex & Polo suffer from many complains, locking accounts and many other issues.
Kucoin & Binance are quite different. they have their own token which give benefits.
Both are going very big in Asia and International.
Check out how Kucoin perform vs other exchanges:
https://www.kucoin.network/Your opinion?
To be honest, Binance is a bit disappointing for me, I went ahead and sent almost all of my assets there because i thought it is one of the safest options out there and i liked their interface BUT the minimum withdrawal amount and moreover the fees are seriously high for such a big exchange.